I have one of the Remington straighteners too. I love it. I don't use it very often, but when I do, it does a wonderful job. I have a lot of hair, so I don't have the patience to blow-dry and THEN straighten, so I love being able to straighten and dry at the same time. My stylist told me to just make sure I spray my wet hair with a heat protecting styling mist before straightening. I just use a cheap one by Thermasilk.
Isn't it odd how the things that are bad for our hair often are the same things that make our hair look fabulous?